Hi Damien, >> + */ >> +static bool bio_in_emulated_zone_area(struct dm_po2z_target *dmh, >> + struct bio *bio, int *offset) > > This function name reads like it is a block layer helper. It mat be less > confucing to keep using the dm_po2z_ prefix for it. > Good point. Even though it is a static function in the same file, it could be confused for a block helper at the caller site. >> +{ >> + /* >> + * Read operation on the emulated zone area (between zone capacity >> + * and zone size) will fill the bio with zeroes. Any other operation >> + >> + return DM_MAPIO_KILL; >> +} > Do you see any more issues apart from the two you pointed out?